var iframe = document.getElementById("frame_content");
function chageRoomCondition(){
    iframe.src="roomCondition";
}
function checkIn(){
    iframe.src="checkIn";
}
function dataStatistics(){
    iframe.src="dataStatistics"

}
function inportData(){
    iframe.src="upload"
}
function selectInformation(){
    iframe.src="selectInformation";

}
function checkOut(){
    iframe.src="checkOut";
}